current source, electromagnetic compatibility, relay control, active rectifier


The development of industry leads to an increase in nonlinear loads, which are generators of higher harmonics in the network. The quality indicators of voltage and current consumed from the network are established by international standards for the quality of electricity. The simplest method of filtering harmonics is passive filters, lack of low quality harmonic compensation. The use of active filters improves the quality of the current. But active filters have a complex control system. The use of active rectifiers as part of semiconductor power supplies solves the problem of generating higher harmonics in the network and provides a power factor equal to 1.

 Six variants of three-phase and single-phase power supplies have been developed. They operate as a current source. All circuits consist of two parts: an active rectifier and a DC-DC converter. The scope of use of such sources is different: a direct current electric drive, an electric power system of wind turbines, an electric system of aircraft. The control system of the relay converters provides the formation of current and the maximum speed in the processing of disturbances.

Oscillograms of the current sources are obtained by digital modeling. They confirm the efficiency of the proposed sources, the electromagnetic compatibility of the power sources with the mains and the value of the power factor close to unity. Current sources are invarant to the action of disturbances: changes in load resistance, mains voltage. The study of electromagnetic processes made it possible to obtain analytical expressions for the maximum and minimum frequency of the relay mode, the capacitance of the capacitors and the operating conditions of the sources.

The developed program allows you to get the parameters for choosing the power elements of the circuit: inductance, capacitance, switching frequency of transistors.

The quality of the consumed current is analyzed by calculating the total harmonic distortion (THD). For all considered sources, the THD value is less than 5%, which meets the quality standards for the consumed current.


Electrical energy. Electromagnetic compatibility of technical means. Quality standards for electric train energy in general-purpose power supply systems: GOST 13109-97: - [Valid 11/21/1997]. - Minsk, 1997 .-- 35p.

Electromagnetic compatibility. Part 3-12. Norms. Current harmonics standards established by equipment with a rated input current of more than 16 A and up to and including 75 A per phase connected to low-voltage general-purpose power supply systems (IEC 61000-3-12: 2004, IDT): DSTU IEC 61000-3 -12: 2009: - [Valid 01.04.2012]. - Kiev, 2012. - 38с.

Electromagnetic compatibility. Part 3-2. Norms. Current harmonic standards established by equipment with a rated input current of up to 16 A inclusive per phase connected to low-voltage general-purpose power supply systems (IEC 61000-3-2: 2004, IDT): DSTU IEC 61000-3-2: 2004: - [Valid 01.01.2007]. –Kiev, 2007. –24p.

CEI, 61000-1-1 : Electromagnetic compability (EMC), Part 1 : General, section 1 : application and interprettion of fundemantal definitions and terms, 2001.

IEEE-519. ШЕЕ Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems,.- W.: JSC, 2014.- 65 p.

Cusco A. Quality of energy in electrical networks / A. Cusco, M. Thompson: trans. with English Robodeya AN M .: Dodeka-XX1, 2008. - 336 p

Akagi Н. Modern Active Filters and Traditional Passive Filters. / H. Akagi // Bulletin of the Polish Academy of Sciences – Technical Sciences,2006. – Vol. 54, No.3. – P. 255-269.

Akagi H. Active Filters and Energy Storage Systems for Power Conditioning in Japan / Akagi H. // Power Electronics Systems and Applications, 2004 Hong Kong, China, 2004 – р.80-88.

Kalarathi, M. & N., Rathina. (2020). Multilevel Parallel Active Power Filter Based on ANFIS Controller for Harmonic Alleviation. Iranian Journal of Science and Technology, Transactions of Electrical Engineering. 45. 10.1007/s40998-020-00384-8.

K. Kalyan, M. S. Rao and S. Gawre, "Improvement of Power Quality Using Series Active Power Filter(SAPF)," 2020 IEEE International Students' Conference on Electrical,Electronics and Computer Science (SCEECS), 2020, pp. 1-5, doi: 10.1109/SCEECS48394.2020.151.

Kolar J. W. The essence of three-phase PFC rectifier systems–Part 1 / J. W. Kolar, T. Friedli // IEEE Trans. Power Electron.,2013. – vol. 28 – Р. 176–198.

Gonçalves JT, Valtchev S, Melicio R, Gonçalves A, Blaabjerg F. Hybrid Three-Phase Rectifiers with Active Power Factor Correction: A Systematic Review. Electronics. 2021; 10(13):1520. https://doi.org/10.3390/electronics10131520

Highly efficient power supplies: Monograph / Yu. P. Samcheleev, V. G. Dryuchin, G. S. Belokha, N. I. Andreeva. - Alchevsk: DonSTU, 2013 .-- 219 p.

Pat. 63609, IPC H02M 7/12. Adjustable power supply / Belokha GS Dryuchin VG, Samcheleev YP, Shevchenko IS; applicant and patent owner Donbass State Technical University. - 201U201103998; stated 04.04.2011; publ. 10/10/2011, Bull. № 19.

Pat. 87224, IPC H02M 7/00. Adjustable power supply / Belokha GS Dryuchin VG, Samcheleev YP, Shevchenko IS,; applicant and patent owner Donbass State Technical University. - №U201310643; stated 03.09.2013; publ. 27.01.2014, Bull. № 24.

Bekbaev A.B. Current stabilization system, electromagnetically compatible with the network. / A.B. Bekbaev, Yu.P. Samcheleev, V.G. Dryuchin, G.S. Belokha, E.A. Sersanbaev // Bulletin of KazNTU, Almaty. - 2014. - No. 1 (101). - With. 93-100.

Yu.P. Samcheleev Universal high efficiency power supply for AC and DC drives. / Yu.P. Samcheleev, V.G. Dryuchin, G.S. Belokha // Bulletin of the National Technical University "KhPI". Collection of Science Works. Series: Problems of an automated electric drive. Theory and practice. - Kh .: NTU "KhPI", 2013. - No. 36 (1009). - S.317-321.

H. Bielokha and I. Shevchenko, "Active Rectifiers in the Electrical System of Aircraft," 2021 IEEE International Conference on Modern Electrical and Energy Systems (MEES), 2021, pp. 1-4, doi: 10.1109/MEES52427.2021.9598724.

G. Belokha, "Frequency converter in the energy generation system of wind turbines", VisnikSNU /, vol. 7 (263), p. 35-39, Dec 2020.